Horseshoe-machine.



m. 70|,0a2. Patent ed May 27, I902.

a. F. PILSUN, Decd.

c. PILSON & w. n. BREWER, Administrators. HORSESl-IOE MACHINE.

(Application filed Apr. 29, 1901.) (No Model.)

3 Sheets-Sheet I.

m: Nzmms runs :50. PHOTOLITNQ. WASHINGTON, a. c.

No. 70|,082. Patented May 27, I902.

" G. F. PILSUN, Decd.

c. msnn '& w. n. BREWER, Administrators. HOBSESHOE MACHINE.

(Application filed Apr. 29, 1901.) 3 Sheets-Shet 2.

NORRIS vnzas c0. PNDYO-UTHOH WASMINGYUN. n. c.

N0. 70|,U82. Patented May 27, I902. G. F. PILSON, Decd.

G PILSON & W. R. BREWER, Administrators.

HORSESHOE MACHINE.

(Application filed Apr. 29, 1901.)

3 Sheets-Sheet 3.

(No Model.)

ill!

HIIIHHHMI llllmm Nirnn STATES A TENT OFFICE.

CLARA PILSON, OF SYKESVILLE, AND WILLIAM R. BREWER, OF BALTIMORE, MARYLAND, ADMINISTRATORS OF GEORGE F. P ILSON, DECEASED.

HORSESHOE-MACHINE.

SPECIFICATION forming part of Letters Patent No. 701,082, dated May 27, 1902. Application filed April 29,1901. Serial No. 58,085. (No model.)

To ctZZ whom it may concern:

Be it known that GEORGE F. PILSON, late a citizen of the United States, and a resident of Baltimore, in the State of Maryland, did invent certain new and useful Improvements in I-Iorseshoe-l\/Iachines, of which the following is a specification.

This invention relates to improvements in machines for bending metal bars or blanks into horseshoe shape; and the invention consists in the construction, arrangement, and combination of parts, as hereinafter described and claimed.

The invention is illustrated in the accompanying drawings, in which- Figure 1 is a side elevation of the machine. Fig. 2 is a top plan view of the same. Fig. 3 is an end elevation. Fig. 4: isa diagrammatic view illustrating the cross-head and its attached parts, which reciprocatetherewith, and also the means for delivering the bent bar onto the conveyer-wheel. Figs. 5,

G, 7, and 8 illustrate the several steps the bar' passes through during its treatment.

In the drawings, a designates a base provided at each corner witha leg or support a, which latter support a frame b above the base. In cross-section the frame is wider at one end than at the other, and at the wider end said frame carries two vertical standards or bearing-supports 0, each of which supports a bearing 0 at the top. A main shaft cl ex. tends horizontally above the wider. part of the frame and is journaled, in said bearingsc, and the two projecting ends of said main shaft each carry a pinion d and (1 Beyond the pinion d on the outer end of the shaft (1 is a grooved pulley (1 Two fiy-wheels cl and fast and loose pulleys d are mounted on said main shaft cl between the bearings c.

A pillow-block 6 'iS secured on the frame I) at each side beneath the bearings c, and said pillow-blocks support a crank-shaft e, which extends horizontally across the frame beneath and parallel with the main shaft d. This crank-shaft extends at each side beyond the vertical standards c,and at each end said crank-shaft carries a gear-wheel 6 each of which latter mesh with and are driven by the pinions d and 61 A crank f has position centrally on the shaft e, and said shaft carries two eccentrics f, one at either side of said crank.

Two pivoted brace-rods f are pivoted to the frame I) in the rear of the crank-shaft e, and said brace-rods take against said shaft at either side of the crank and reinforce said shaft against any backward strain.

Secured to the frame I) about midway between its two ends are two guide boxes or channels 9, each of which is in a direct line with the eccentrics f, and said boxes are each provided with bottom flanges which proj ect inward or toward each other, thus forming two guide-rails g. A slide h passes through each of said boxes, and the forward end of each slide carries a laterally-adjustable head h,iand the other end of each slide is provided with a circular head k which takes between aforked head 71 which latter is connected in turn to the eccentric directly behind it by means of an adjustable turnbuckle-head 7%. By means of this turnbucklehead.the stroke of the slides may be varied. .Itwill thus be seen that as the eccentrics revolve the slides will be reciprocated through the boxes g. Both of the eccentrics areset alike to reciprocate the slides in the same direction at the same time. A cross-head t' has position between the two boxes g and rests on the guide- .rails g, and one end of saidcross-head is -slotted,-as ate, and said slotted end is provided with a cross-pin i to which one end of a connecting-rod j is secured, and the other end of saidconnecting-rod is secured to the crank f. Itwill thus be seen that the crosshead t is reciprocated between the boxes by the revolution of the crank. The forward end of the cross-head carriesaformer 7c,whioh projects in front of the cross-head and reciprocates therewith, and a die-block Z is secured to the bottom of saidformer and moves back and forth therewith. The extreme end of the former is provided with a bufier-head 7a. A bracket m, secured on top of the cross head, pivotally supports a lever 'm, which latter is provided at one end with a weight m and at the other end said lever is inclined upwardly and is provided with a slotted head m which carries a depending fork m the ends of which take over the sides of the former It. The weight m on the lover m serves to keep the head end m of said lever normally up. A stationary bracket on has position over the lever m, and said bracket is provided with a rounded face m which contacts with the inclined head end m of the lever on as the latter is moved backward by the cross-head and causes said head end and fork m to be depressed.

Two wearing-tables 0 are secured one at each side of the frame Z) in front of the boxes g, and each of said tables is provided with an abutment 0', which latter are directly in front of the slides h, and each of said tables also supports a bell-crank-shaped lever 0 which latter are pivoted at 0 to said tables, and one end of each lever o is provided with a roller 0, while the other end 0 of each of said 1evers project inward or toward each other and are in the path of travel of said buffer-head 7c. The confronting ends 0 of said levers are each provided with inclined buffers 0 which are adapted to be acted on by the head The outer angular corner 19 of each lever 0 is pivotally connected to a rod 19, which latter are each surrounded bya coiled spring 19 and the free endsof each of said rods 1) pass freely through a head 13 which latter is pivotally secured to the wearing-tables o. It will be seen that as the buffers o are pressed outward by the head 70' the rods 9 will slide through the heads p gand the springs 132 will be compressed, and the rollers 0 on the ends of said levers 0 will be moved inward toward each other, and when the head 70 retracts the springs 19 will restore the levers o to their normal position, as in Fig. 2.

A bracket q is secured to each of the boxes g, and the forward end of each bracket carries a screw-rod q, and the inner end of each rod carries a depending arm which projects down behind the abutments 0 on the tables 0, and said arms form guides for the bar that is to be bent into a shoe form.

Between the two wearing-tables o and supported thereby is a wearing-plate r, on which the bar is to be bent and formed in a horseshoe shape, and behind said wearing-plate is an opening .9, through which the bent shoe is discharged. Beneath said opening 3 and secured to the frame is a downwardly-inclined bar 3', and the shoe is discharged from the die through said opening heel first and drops over said bar straddle fashion, and the bar guides the bent shoe, heel downward, onto a reversely-inclined bar 3 which latter is also secured to the frame of the machine.

Secured to the base a at one side of the machine and beneath the frame is a bearing 25, and at the opposite side of the base is a second bearing 15, and a shaft 25 extends entirely across said base and is journaled in the bearing at one side of the base, and the other end of said shaft is supported in the other bearing 23. One end of the shaft t carries a grooved pulley t and abelt t, passing over the pulley t and also over the grooved pulley d on the main shaft (1, transmits mo Fig. 8.

tion from the latter shaft to the shaft The end of the shaft 25 is provided with a worm t and said worm meshes with a worm-gear a, which revolves in a horizontal plane on a vertical shaft u. A conveyer-wheel 4; also revolves in a horizontal plane on said vertical shaft, and the rim 1; of said wheel is revolved beneath the inclined barsiand the bent horseshoes 1: are delivered onto and straddle the rim of said wheel and are conveyed around to the outside of the machine.

The operation of the machine is as follows: Supposing the cross-head t' and slides h to be retracted or moved back toward the crankshaft. A heated bar or billet w of the shape shown in Fig. 5 is placed across the machine, with the ends of the bar taking behind the abutments 0 and in front of the slides and cross-head. The first thing that takes place is the simultaneous forward movement of the two slides, the heads h of which strike the bar or billet w and flatten the two ends, as seen in Fig. 0. The heads h are adjusted laterally, so as to flatten a greater or less surface on the ends of the bar, as may be desired. The cross-head carrying the die-block Z now moves forward, and the die-block strikes the bar or billet midway between its two ends, and at the same time the slides retract, and the center of the bar is pushed forward by the die-block, and the ends are drawn inward away from the abutments 0. (See Fig. 7.) The buifer-head k, projecting in front of the cross-head, now strikes the buffers 0 on the levers 0 and pushes them forward,which operation'causes the rollers o on the other end of each lever 0 to move inward toward each other and take against the ends of said bar 71) and bend them inward around the rear of the dieblock Z to take the form shown in The bending operation is then completed. The former 7c and bufferhead 7t now retract with the cross-head 2', and as the die-block Z is secured to the former it also retracts, carrying the bent bar. On top of the cross-head and reciprocating therewith is the pivoted lever-m, and the forward end of said lever carries the depending fork m which takes over each side of the former and also over the die-block Z, and when the bar has been bent around said die-block the fork m is above the two diametrically opposite sides of said bent bar. Now as the die-block Z and bent bar move backward the fork m and lever m also move backward over the opening 8, at which time the forward end of the lever m contacts with the stationary bracket m and depresses said lever and fork m and the ends of the fork m press down on top of the bent bar and pushlthe bar oif of the die-block Z into said opening 8. The fork m presses on the bent bar to nearer to the rear or heel end than at the front, and consequently the bar is discharged through the opening with its two ends hangingdown, and as the bent bar passes through the opening s the two ends straddle the inclined bar .9 and slide downwardly and forwardly and are delivered onto the reversely-inclined bar 3 down which they slide and are finally delivered onto the rim o of the conveyer-wheel o, as seen in Fig. 4:.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is-

1. In a machine for bending metal bars, the

I combination of a cross-head; means for reciprocating said cross-head; a die-block carried by said cross-head; two slides, one at either side of said cross-head and adapted to flatten the ends of the bar; means for reciprocating said slides; brackets, q, provided with screw-rods, q, and also provided with arms, (12, depending from said rods and adapted to form guides for the bar; and means for bending the bar around the die-block.

2. In a machine for bending metal bars, the combination of the reciprocating cross-head; the dieblock carried thereby; two bell-crank levers each of which is fulcrumed at one side of said cross-head and said levers provided withinwardly-proj ecting forward ends adapted to be moved outwardly by the forward movement of said cross head whereby the other ends of said levers are drawn inwardly to bend the bar around the die-block; and a spring-retracted rod secured to each lever forward of its fulcrum-point to restore said levers to the normal position.

3. In a machine for bending metal bars the combination of a crank-shaft having a crank;

: a cross-head; a connecting-rod connecting said crank and cross-head whereby the latter is reciprocated a lever pivoted on said crosshead and reciprocating therewith; a stationary device for depressing the end of said lever; means for bending the metal bars; and means coacting with the pivoted reciprocating lever for ejecting said bent bars.

4. In a machine for bending metal bars the combination of a cross-head; means for reciprocating said cross-head; a die-block reciprocated by said cross-head; bell-crank 1evers pivoted to the frame of the machine for bending a bar around the die-block; means on the cross-head for operating said bellcrank levers; spring-operated rods pivoted to said levers for restoring them to the normal position when the cross-head has been retracted; and means operated by the movement of the cross-head for ejecting the bent bars from the die-block.

5. In a machine for bending metal bars the combination of a cross-head; a lever pivoted to said cross-head and having an inclined for- Ward end; a forked ejector carried by the forward end of said inclined lever; a die-block; means for bending the metal bar around the die-block; and a stationary device adapted to contact with the inclined forward end of said lever when the cross-head is retracted whereby the bent bar will be ejected from the dieblock.

6. In a machine for bending metal bars the combination of a crank-shaft having a crank a cross-head reciprocated by the crank; a dieblock reciprocated by the cross-head; means for bending the bar around the die-block; means for ejecting said bent bar; a wheel revoluble in a horizontal plane and means coacting between the ejector and said wheel for delivering the bent bars onto said revoluble wheel.

7. In a machine for bending metal bars the combination of a cross-head an ejector; a die-block; means for reciprocating said cross head and die-block; a wheel revoluble in a horizontal plane beneath said machine and an inclined guide interposed between said wheel and the point of ejecting the bent bars whereby the bars after being ejected are guided onto said wheel.

8. In a machine for bending metal bars,- the combination with the base provided with a discharge-opening, s, of means, for bending the bar on said base; means whereby the bent bar will drop through said discharge-opening; a wheel mounted to revolve under said base with its rim in registry with said discharge opening; and an inclined guide interposed between said rim and said discharge-openin g and on which guide the bent bars slide from said opening onto said wheel-rim.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

CLARA PILSON, WILLIAM R. BREWER, Coadmt'nistmtors of the estate of George F.

Pz'lson, deceased. WVitnesses:

CHARLES B. MANN, J r., ROWLAND HILL. 

